Ball-bearing connection



Jan. 24, 1928.

F. C. BANTIN BALL BEARING CONNECTION Filed July 14, 1926 3 Sheets-Sheetl Jan. 24, 1928. a 1,656,970

F. c. BANTIN BALL BEARING CONNECTION Filed July 14, 1926 s Sheets-Sheeta 56/ FA o'er/elf 6 E0077, 3

Patented Jan. 24, 1928.

its!) STA PATENT OFFICE.

FREDERICK 0. Banana, on sALAMAncA, NEW YORK.

BALL-BEARING CONNECTION.

Application filed July 14, 1928.

assembly primarily designed for securinga' connecting rod to the crankpinor" a crank shaft.

An important object of the present invention is to improve generally themanner of securing the connecting rod to thecrank shaft so that theamount of friction between these elements will be reduced to a minimum.

Another important object of the present invention is to provide such aball bearing connection which is capable of being easily and quicklyadjusted so that any loose play existing between the various parts maybe readily taken up.

Another object of the invention is the provision of such an improvedball bearing connection which consists of a minimum number of parts, allof which may be readily assembled and disassembled relative to oneanother so that any worn or broken parts may be easily and quicklyrenewed.

Another object of the invention is the provision of such an improvedball bearing connection having incorporated therewith means foreiiectively preventing any lateral movement of the connecting rodrelative to the crank shaft.

A further object of the present invention is to provide such a ballbearing connection which, while simple in its construction, isnevertheless strong, sturdy and durable, one which is practical andefficient in its operation, and one which can be manufactured and placedon the market at a reasonable cost.

W'ith these and numerous other objects in view, the invention resides inthe novel con struction, combination and arrangement of parts which willbe hereinafter more fully described, illustrated in the accompanyingdrawings and particularly pointed out in the appended claims;

In the drawings forming a part of this application Figure 1 is avertical transverse central sectional view through a ball bearingconnection constructed in accordance with the present invention showingthe manner in which the same is utilized to secure a connecting rod tothe crank pin of a crank shaft.

Figure 2 is a side elevation of the connec- Serial No. 122,478.

tion showing the same removed from the crank shalt.

higure 3 1s a sectional view taken on line 38 of Figure 2. i

Figure 4. is a sectional view taken on line 1-i of Figure 3.

Figure 5 is a detail view of the semi-circular ring sections and thesupporting rings associated therewith. I

Figure 6 is a view similar to Figure 1 showing a somewhat modified formof the present invention. V

Figure '7 is a sectional view taken on line T of Figure 6. 2

Referring now more particularly to the accompanying drawings andespecially to Figures 1 to 5 inclusive wherein has been shown onepractical embodiment of the pres entinvention, the letter A generallyindi cates my improved ball bearing connection for connecting theconnecting rodB to the crank shaft The crank shait C is constructed withthe usual throw arm 10 comprising the spaced crankcheeks 11 and theintegral crank pin 12. The crank pin 12 is of a novel construction andit will be noted that the same is provided with a cylindrical centralportion 13 which tapers towards its opposite ends, so

that the outer ends of the said crank pin 12 are of a less diameter thanthe central cylindrical portion 13 thereof. The central cyliny dricalportion 13 is provided with a circumferential groove 14 and the diameterof the crank pin 12 is purposely made larger at its center to compensate-forthe said groove14 so as not'to weaken the same.

Carried by the cylindrical central portion 13 of the crank pin 12 is atwo-part ring com prising the upper and lower semi-circular sections 15and 16, each of said sections being substantially cross-shaped incrosssection as shown in Figure 1 and comprising the substantially wide baseportion 17 adapted to engage the central cylindrical portion 13.

Formed on the outer surface of the base portion 17 intermediate its sideedges is the outwardly projecting circumferentially extending tongue 18while formed on the inner surface thereof is an inwardly projectingcircumferentially extending rib 19 in alinement with the tongue 18, theribs 19 or the said ring sections 15 and 16 being receivedwithin thecircumferential groove 14 in the crank pin 12.

loo

Fitted on the base portions 17 of the semicircular ring sections and 16at opposite sides of the tongues 18 are the ball bearing supportingrings 20 and 211., which serve to secure the said ring sectionstogether, the outer corners of the said rings 20 and 21 being providedWith annular grooves or recesses which receive the ball bearings 23 andQ-Li.

Arranged to he slipped over the opposite ends of the crank shaft C arethe ball hearing retaining rings and 26, the inner faces therco'l beingbeveled as at 27 to provide annular seats tor the ball bearings 23 and21 While the outer side faces of the upper and lower portions of thesaid retaining rings ar: beveled as at 28 and 23' for a purpose whichwill be more clearly hereinafter described.

For the purpose of securing the retaii'iing rings 2;; and 26 inposition. the lower end of the connecting rod 15 is formed With a cap 99comprising the semi-circular top wall 230 and the divergent side Walls31. and 32. the inner surfaces of the side Walls of Which are adapted tosnugly engage the upper outer beveled faces 98 of the retaining rings52:": and 26, the ends of the top Wall 30 being Formed with theoutwardly directed securing lugs 33 and 3 A bottom cap 35 similar to thecap 29 is also provided and comprises the semi-circular bottom wall 36and the divergent side walls 37 and 38. the inner surfaces of said sidewalls being adapted to snugly engage the lower outer beveled 'l aces 2Soi? the retaining rings .25 and 26. The bottom wall 36 being alsoprovided at its opposite ends with the outwardly directed securing lugs39 and all adapted to aline with the lugs and St on the cap 29. Passingrespectively through the said lugs and 25 and the lugs 3i and 40 are thesecuring bolts 11 and 1-2, the lower ends thereof receiving suitablelock washers +13 and. nuts ti l. Arranged on the said bolts 41 and 4-2between the said securing; lugs 33 and 39 and 3 t and it) are aplurality of shims t5 and 4:6.

"When securing the connecting rod B to the crank pin 12 ot the crankshaft C, the sections 15 and 16 ot' the two-part ring are lirst placedin position and the inwardly extending ribs 19 thereof engaged Wlllllilthe circumferential groove 1-1 in the crank pin 12 after which the splitresilient rings 20 and 21 are snapped or placed on the said ringsections 15 and 16 as herein above described. The retaining rings 25 and26 are then slipped ever the opposite ends of the crank shaft and theball bearing 33 and 2 1 positioned between the said retaining rings :25and 26 and the supporting rings 20 and 221 after which the saidretaining rings are firmly clamped in position by means of the caps E29and 35. Thus, it will be seen that the various parts are properly andfirmly secured relative to one another. hen it is desired to take up anyplay which may exist between the various parts one or more of the shimsid and el is or are removed and the nuts lel; tightened wherelirr tobring the caps 20 and 35 closer together and conse quently pr 1 upon and:lorcc the retaining rings 2:) and 53d inwardly.

In Figures (5 and T has been shown a sonar hat modified form or? thepresent inventiiin and, wherein the letter I) generally indicates theball bearing assembly, tor securing the connecting rod ill to the cranksha't't i The cranl: ai't l1 includes the crank or throw arm l9 baringthe integral crank pin to formed with the central cylindrical portion 51which tapers towards its opposite ends and is provided with acircumterentially extending rib The ball bearing assembly I)Qll'llJOtllOS in its construction a two-part ring including thesemi-circular sections 53 and at, each oi said ring sections including asubstantially WlflO base portion an adapted to rest upon the central crlimlrical portion 51 of the. crank pin 50, said base portions liieingformed on their inner nurtures and intern'iediatc the side edges thereofwith a circinntcrentially extending groove for receiving thecircumferential rib 553. Each of the said ring sections furthercomprises the outwarcflly extending l'l'tlll( ft*tl intermediateportions :liormcd intermediate the side edges lhercol with an outwardl;projecting tongue 5? positioned in alincihent with the eircuin'lerential rib 5E2. Adapted to encircle the semi-circular ring sections 55 and 5% at opposite sides of the tongues 51' are the bearingsupportii'ig ring. 58 iind 51), the outer corners thereol beingl'orniedwith annular grooves for rcceirbig the ball bean ings (30 and (ll.

This form of the invention also embodies the ball bearing retainingrings 62 and (lil which are secured in position by means of the top captie-l carried by the connecting rod E and the bottom cap 135, saidretaining rings and caps being of the same conslrud tion as referred tohcreinabove in connection "with the preferred form oi the inrention.said caps (kl and (35 being formed with the securing lugs 66 and GT and(at and 13; respectively through which are inserted the securing bolts70 and T1, the lower ends of which re ive the locking washers 72 and thenuts iii. Arranged on the said bolts (0 and 71 between the said scouringlugs 66 and G8 and 67 and ('59 respectively are a plurality of shims Tetand T5.

hen securing the connecting rod E to the crank shaft F, thesend-circular ring sections and M are first placed in posi- {)0 tionover the circumferential rib 52 alter which the supporting rings 58 andon are placed in posit on on the ring sections as ill] ill

set forth hereinabove. The retaining rings 62 and 63 are then slip edover the 0 posite ends of the crank sha and thebal bearings and 61 thenplaced in position after which the said retaining rings are firmlyclamped in position by means of the caps 64 and 65. Should it be desiredtotake up any play between the various parts, one or more of the shims74 and 7 5 may be removed and the nuts 73 tightened whereby to force theretaining rings inwardly.

From the foregoing it will be seen that the essential difference betweenthe .preferred form of the'invention and the form shown in Figures 6 and7 lies in .the manner of securing the semi-circular ring sections to thecrank pin so as to prevent any lateral movement of the connecting rodrelative to the crank shaft.

While the foregoing description has been confined to the use of thepresent invention in association with a connecting rod, it is of courseto be understood, that with a few minor changes, the same may be readilyadapted for use as a main bearing.

Changes in the details of construction may be resorted to'withoutdeparting from or sacrificing the spirit of the invention so long assuch changes fall within the scope of the appended claims.

What is claimed is:

1. An anti-friction bearing structure of the character described,comprising a pair of split annular bands, designed to position inend-to-end relation about a cylindrical body, a centrally positionedcircumferentially extending tongue carried by each band section andforming with the assembled sections a complete annular outstandingtongue, a ball bearing supporting ring designed to engage over theassembled bands upon each side of said tongue, each ring having acircumferentially extending groove formed at the outer corner thereof,and a pair of ball bearing retaining rings, each designed to bepositioned with the inner face thereof in opposition to thegroovedportion of a supporting ring, to maintain a plurality of bearing ballsin position against the adjacent supporting ring.

2. An anti-friction bearing structure of the character described,comprising a pair of split annular bands, designed to position inend-to-end relation about a cylindrical,

body, a centrally positioned circumferentially extending tongue carriedby each band section and forming with the assembled sections a completeannular outstanding tongue, a ball bearing supporting ring designed toengage over the assembled bands upon each side of said tongue, each ringhaving a circumferentially extending groove formed at the outer cornerthereof, and a pair of ball bearing retaining rings, each designed to bepositioned with the inner face thereof in opposition to the groovedportion of a supporting ring, to maintain a plurality of bearing ballsin position against the adjacent supporting ring, and a retaining ribmember formed circumferentially of the inner face of each of saidsemi-circular band sections to set up an annular rib designed forengagement in a receiving groove formed in and about the body of acylinder supporting the bearlng.

3. A bearing structure of the character described, comprising a pair ofsemi-annular members designed to be positioned in end-toend relationabout a supporting cylindrical body, each of said members having formedin the inner face thereof, a circumferentially extending groove designedto receive a retaining flange or rib carried by the cylindrical body,each of said members further hav ing at the central portion of the outerface thereof, a relatively wide circumferentially extending rib and arelatively narrow circumferentially extending rib'formed centrally ofthe first mentioned rib, a pair of ball bearing supporting rings eachhaving formed at the inner edge of one side thereof, a circumferentiallyextending angular recess, said rings each being designed to engage overthe assembled annular member at one side of the central rib port-ionsthereof and receiving in its angular recess the adjacent edge of the ribof greater width, each ring further having the outer corner of theopposite face provided with a circumferentially extending groovedesigned to receive bearing ball members, and a ball retaining ringdesigned to co-act with each of said supporting rings for maintainingbearing balls in position upon the supporting rings.

In testimony whereof I affix my signature.

FREDERICK C. BANTIN.

